The GetInfo function of the EFI_FILE_PROTOCOL can be used to retrieve the
information about the file. You will need to use the EFI_FILE_PROTOCOL
instance from opening the specific file instance. for example, if you
wanted to open Info.txt in the root of the file system, you should use the
root->open for "Info.txt" and get the returned file handle. Then, using
the returned EFI_FILE_PROTOCOL, you should call EFI_FILE_GET_INFO and pass
the gEfiFileInfoGuid and a buffer and a buffersize. The EFI_FILE_GET_INFO
function may return EFI_BUFFER_TOO_SMALL, in which case, it will update
the buffer size pointer with the required size to fit the EFI_FILE_INFO
structure.
Best Regards,
Aaron
From: KSilva <>
To: edk2-devel@lists.sourceforge.net,
Date: 06/01/2015 06:33 AM
Subject: [edk2] how to get the file length
I am trying to get a file length, but I have not had success yet.
here is my code:
Status = gBS->HandleProtocol(Device,
&gSimpleFileProtocol,
(VOID**)&fileSystemProtocol
);
Print(L"Status HandleProtocol :%r\n", Status);
root = NULL;
AsciiStrToUnicodeStr("kdias", texto);
Status =
fileSystemProtocol->OpenVolume(fileSystemProtocol,
&root);
Print(L"Status OpenVolume :%r\n", Status);
Status = root->Open(root,
&newHandle,
nameFile,
EFI_FILE_MODE_READ|
EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE, 0);
Print(L"Status do Open :
%r \n",Status);
Status =
newHandle->GetInfo(newHandle,&gEfiFileInfoGuid,&BufferSize,(VOID
&fileInfo);
Print(L"Status GetInfo
:%r \n",Status);
return EFI_SUCCESS;
}
------------------------------------------------------------------------------
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/edk2-devel
------------------------------------------------------------------------------
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/edk2-devel
